Howdie!
Also on the IS static IP satellite package -I am very happy with it!
Used to be on the 384 Express account, but changed when the rolling window was started.
Can confirm approx. 50k/s down. Had virtually no downtime since I started. Doing about 3,5 - 4,0GB per day down. As stated, latency may be an issue for gaming, but no problem for downloading or Skype. (most of my traffic is http international - can not vouch for torrents but should not be a problem as unshaped).
Only caviat is that most ISP's reselling these require 12 month contract. Oh, the other thing is that no pop3 / smtp service - this will be extra.
About cost: Most 512 satellite = R1700 setup with +-R1539 per month; Fiber 512 = R1700 setup with +- R2500 per month;
Not sure the extra cost for fibre is worth it if just for downloading. If low latency is needed for international gaming, then different story. (Local latency same as standard ADSL line).